<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>js插件编写</title>
</head>
<body>
    <script type="text/javascript" src="./index.js"></script> 
    <script type="text/javascript">
      var plugin = new plugin({name:'len'});
      debugger;
      plugin.output();
    </script>   
</body>
</html>